I am beginning to put together a Marshall 1974x, better known as the Marshall 18W amp. This all tube powered amp will be built in a head cabinet that can be hooked up to an external speaker cabinet of choice. This 1974x circuit won’t be stock though, I am using the 1974x circuit as a platform to try a few modifications and circuit tweaks/ideas. The end goal of the build is to have a low power Marshall JTM/JMP/Plexi type amp. Lots of big fat clear clean tones and sweet harmonic distortion.

The chassis, eyelet board, power transformer, output transformer, faceplate and head cabinet are coming from the good folks at Trinity Amps. The rest of the parts I am sourcing myself.

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Top Drive Preamp

18 April 2009

This is a new preamp design I have called “Top Drive”. Top Drive is a compact tube powered preamp that is quite unique and rocking. The preamp is voiced in interesting way,  the sound is very much like a classic Vox amp. The preamp has got that great top end “jangley” character with that nice almost loose bottom end. It has great clarity and character all the way up the volume control. When the volume control is maxed out there is great singing type of distortion. Top Drive is very much like an old Vox AC30 in the sense that is has a single volume control. With no master volume (gain) control this means you need to crank up the volume for that great tube saturation. There is something about non-master volume amps that make them special and sound different. [you know you want to read more…]


Marshall 1974x (18W)

December 8, 2008

The Marshall 1974x (better known as the Marshall 18W) was an amplifier produced by Marshall from 1965 to 1968. At only 18W and being a combo amp with a single 12” speaker the amp was a change of pace from the loud 50W-100W Marshall stacks of the time. Though the 18W was never super popular […]

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